The final boss to beat in the expansion to is the Source of the Abyss, a familiar face that has haunted the characters of the story. This Shadow of regrets made manifest summons Personas of their own to combat your team. The only way to beat this foe is to recognize your group's weaknesses and exploit them to move forward.
From this point on, expect heavy spoilers regarding the identity of the final boss of and the conclusion of the game's story.
Just like in expansion for the original, the final boss of is the protagonist — the character you played throughout the main game. Met at the bottom of the Abyss of Time, this shadow must be defeated to destroy the dark realm. Unlike other shadows encountered in , the Source of the Abyss is a very different boss fight than what you might expect.
The shadow of the former protagonist summons multiple Personas to fight Aigis and your team during this boss fight. With Aigis awakened to the Wild Card during the DLC, you have the same wide arsenal of Persona to rely on as you did in the base game. The weaknesses of the Source of the Abyss depend on what they summon, but the Persona they call upon are ones you've seen before.
The Nyx Avatar is the final boss of Persona 3 Reload which players will face on January 31st & with 14 phases, this will be a fight of endurance.
The Source of the Abyss relies on the Persona of each party member, giving itself a collection of seven different Persona it can call on. Every three turns, the Source of the Abyss will switch Persona, changing what it is weak to. Doing this also changes the resistances of the boss, making it hard to predict what attacks will work and which ones won't as the battle continues.
As you may know, the Persona in wielded by your party are extremely strong. The boss can utilize every attack from the Personas it summons, making every move it makes dangerous. The Persona the Source of the Abyss can switch between are:
The Source of the Abyss always starts the boss fight
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